I'm just not familiar with turbos that do offer real world (not manufacturer stated numbers) city&hwy great mpg and great performance at the same time so would be curious to hear about specific models from owners I guess. Another thing I wonder about is longevity, I always have heard bad things about turbos/engines lasting power esp on cars getting a lot of HP from them.

 

But turbos shure are easy to add power, just turn up the boost! But when cars are getting ever heavier, and you still want to accelerate quickly, the only way to do that is burn more gas!

Thing is, here in the good ol USofA, we have cheap gas, so we tend to get power over economy.

Matt

and RockC, a turbo is only a win-win if you don't need any low RPM torque....

Matt

 

just an interesting tid-bit... the new GTI MKV reaches max torque (206lbft) at 1500RPM and holds it steady all the way to 5100. And that's a turbo 4.

I wonder what BMW will pull off?

 

The MINI turbo is going to reach pack torque below 2k and hold it over 5k. I believe it's already been stated in this thread but it's definitely in the Motoringfile article. I can't wait to see the new engine.

 

Hmmm. Try checking out the Volvo S40/V50 with the T5 engine - they have stump-pulling torque low in the RPM range. When I first drove one, I thought I was driving an H1 Hummer Alpha. So, it is possible to tune a turbo engine for high torque low in the rpm range. All we can do is wait until the BMW turbo engine is released to see what it actually can do.

 

with the twin turbo 2.7. It was impressive as well. They limited the torque via computer to 250 ft lbs over quite a bit of the RPM range. Wonder what the torque curves would look like without the electronic mother in law?

Matt

 

About 25% higher. But then they would have higher failure rates of the automatic transmissions.... Ergo, the mother-in-law.

 

REDUCED NOISE?!?!?!? What do MCSers live for? The beautiful wheeeeEEEEEEEEEE! of the supercharger. NOISE! not the silly psssshh od a blowoff valve, although the twincharge kits combine the two and it sounds pretty tight... but that's still got a S/C.

Sorry to be such a whiner (pun intended)

 

While many like a rather noisy engine many markets are enforcing ever increasingly tighter noise standards. (And overseas, impact standards to lessen injuries to people hit by cars, which will result in higher hood surfaces to give more crush/cushioning to people unfortunate enough to be struck by a car.)

I don't expect the new turbo-charged engine to have a blow-off valve. That's so past it. New turbo-chargers use a variable vane setup -- under control of the engine controller unit (engine computer) -- to modify the effectiveness of exhaust gas flow into the turbine to control the amount of pressurization at the compressor side.

Turbo-charged diesel engines have used these for a while but only recently (within the last couple of years) have turbo-charger makers sorted out these for gasoline engines and their higher exhaust gas temperatures.

Sincerely,

RockC.

 

Never meant to imply a turbo-charged engine would lack low-end power. With modern turbo-charger design the turbo can be sized to deliver boost a very low revs (my VW TDi developed max. torque (155 ft/lbs) at 1900 RPMs...) and yet not blow the heads off the engine at higher engine RPMs and not run out of air at those higher speeds either.

Sincerely,

RockC.

 

Turbo will definitely make it alot easier to get HP out of it. How much it can handle...I actually think the current motor can handle more due to the iron block vs the aluminium block in the new motors.